AUGMENTING FERTILITY IN ANOESTRUS AND REPEAT BREEDING CROSSBRED COWS USING CONTROLLED BREEDING TECHNIQUES
Loading...
Date
2013
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Anand Agricultural University, Anand
Abstract
This study was carried out at 5 villages of Anand district under the AMUL milk
shed area on 50 crossbred cows, comprising 20 acyclic-true anoestrus, 20 cyclic-repeat
breeders and 10 normal cyclic cows (exhibiting oestrus within 90 days postpartum). The
objectives were to evaluate clinical response and monitor peripheral plasma
progesterone, biochemical and macro-micro minerals profile at different time intervals in
anoestrus (CIDR and Ovsynch protocol) and repeat breeding (AI+GnRH and Mid-cycle
PGF2α inj.) cows treated with different hormonal preparations. The effect of these
protocols was evaluated by comparing oestrus induction response, oestrus induction
interval and induced/first cycle (with fixed time AI) as well as overall of three cycles
conception rates, and monitoring plasma progesterone by RIA, total cholesterol, total
protein, calcium, inorganic phosphorus and magnesium by assay kits on auto-analyzer,
and micro-minerals (Zn, Fe, Cu,. Co, Mn) profile using wet digested samples on atomic
absorption spectrophotometer at different time intervals (day 0, 7, 9/10-AI) of treatment
in anoestrus and (day 0 and day of oestrus/AI) in repeat breeding as well as normal
cyclic control cows and on day 21 post-AI in all the cows.
Ten true anoestrus crossbred cows were inserted with i/vaginal CIDR (containing
Description
Keywords
Animal Reproduction, Analysis